According to World Health Organiztion (WHO), the diseases or disorders for which acupuncture therapy has been tested in controlled clinical trials reported in the recent literature can be classified into four categories as shown below.

1. Diseases, symptoms or conditions for which acupuncture has been proved-through controlled trials-to be an effective treatment:

3. Diseases, symptoms or conditions for which there are only individual controlled trials reporting some therapeutic effects, but for which acupuncture is worth trying because treatment by conventional and other therapies is difficult: